1 /* Remote debugging interface for boot monitors, for GDB.
3 Copyright (C) 1990-2015 Free Software Foundation, Inc.
5 Contributed by Cygnus Support. Written by Rob Savoye for Cygnus.
6 Resurrected from the ashes by Stu Grossman.
8 This file is part of GDB.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 /* This file was derived from various remote-* modules. It is a collection
24 of generic support functions so GDB can talk directly to a ROM based
25 monitor. This saves use from having to hack an exception based handler
26 into existence, and makes for quick porting.
28 This module talks to a debug monitor called 'MONITOR', which
29 We communicate with MONITOR via either a direct serial line, or a TCP
30 (or possibly TELNET) stream to a terminal multiplexor,
31 which in turn talks to the target board. */
33 /* FIXME 32x64: This code assumes that registers and addresses are at
34 most 32 bits long. If they can be larger, you will need to declare
35 values as LONGEST and use %llx or some such to print values when
36 building commands to send to the monitor. Since we don't know of
37 any actual 64-bit targets with ROM monitors that use this code,
38 it's not an issue right now. -sts 4/18/96 */
45 #include <sys/types.h>
52 #include "gdb_regex.h"
55 #include "gdbthread.h"
56 #include "readline/readline.h"
59 static char *dev_name
;
60 static struct target_ops
*targ_ops
;
62 static void monitor_interrupt_query (void);
63 static void monitor_interrupt_twice (int);
64 static void monitor_stop (struct target_ops
*self
, ptid_t
);
65 static void monitor_dump_regs (struct regcache
*regcache
);
68 static int from_hex (int a
);
71 static struct monitor_ops
*current_monitor
;
73 static int hashmark
; /* flag set by "set hash". */
75 static int timeout
= 30;
77 static int in_monitor_wait
= 0; /* Non-zero means we are in monitor_wait(). */
79 static void (*ofunc
) (); /* Old SIGINT signal handler. */
81 static CORE_ADDR
*breakaddr
;
83 /* Descriptor for I/O to remote machine. Initialize it to NULL so
84 that monitor_open knows that we don't have a file open when the
87 static struct serial
*monitor_desc
= NULL
;
89 /* Pointer to regexp pattern matching data. */
91 static struct re_pattern_buffer register_pattern
;
92 static char register_fastmap
[256];
94 static struct re_pattern_buffer getmem_resp_delim_pattern
;
95 static char getmem_resp_delim_fastmap
[256];
97 static struct re_pattern_buffer setmem_resp_delim_pattern
;
98 static char setmem_resp_delim_fastmap
[256];
100 static struct re_pattern_buffer setreg_resp_delim_pattern
;
101 static char setreg_resp_delim_fastmap
[256];
103 static int dump_reg_flag
; /* Non-zero means do a dump_registers cmd when
104 monitor_wait wakes up. */
106 static int first_time
= 0; /* Is this the first time we're
107 executing after gaving created the
111 /* This is the ptid we use while we're connected to a monitor. Its
112 value is arbitrary, as monitor targets don't have a notion of
113 processes or threads, but we need something non-null to place in
115 static ptid_t monitor_ptid
;
117 #define TARGET_BUF_SIZE 2048
119 /* Monitor specific debugging information. Typically only useful to
120 the developer of a new monitor interface. */
122 static void monitor_debug (const char *fmt
, ...) ATTRIBUTE_PRINTF (1, 2);
124 static unsigned int monitor_debug_p
= 0;
126 /* NOTE: This file alternates between monitor_debug_p and remote_debug
127 when determining if debug information is printed. Perhaps this
128 could be simplified. */
131 monitor_debug (const char *fmt
, ...)
137 va_start (args
, fmt
);
138 vfprintf_filtered (gdb_stdlog
, fmt
, args
);
144 /* Convert a string into a printable representation, Return # byte in
145 the new string. When LEN is >0 it specifies the size of the
146 string. Otherwize strlen(oldstr) is used. */
149 monitor_printable_string (char *newstr
, char *oldstr
, int len
)
155 len
= strlen (oldstr
);
157 for (i
= 0; i
< len
; i
++)
168 sprintf (newstr
, "\\x%02x", ch
& 0xff);
207 /* Print monitor errors with a string, converting the string to printable
211 monitor_error (char *function
, char *message
,
212 CORE_ADDR memaddr
, int len
, char *string
, int final_char
)
214 int real_len
= (len
== 0 && string
!= (char *) 0) ? strlen (string
) : len
;
215 char *safe_string
= alloca ((real_len
* 4) + 1);
217 monitor_printable_string (safe_string
, string
, real_len
);
220 error (_("%s (%s): %s: %s%c"),
221 function
, paddress (target_gdbarch (), memaddr
),
222 message
, safe_string
, final_char
);
224 error (_("%s (%s): %s: %s"),
225 function
, paddress (target_gdbarch (), memaddr
),
226 message
, safe_string
);
229 /* monitor_vsprintf - similar to vsprintf but handles 64-bit addresses
231 This function exists to get around the problem that many host platforms
232 don't have a printf that can print 64-bit addresses. The %A format
233 specification is recognized as a special case, and causes the argument
234 to be printed as a 64-bit hexadecimal address.
236 Only format specifiers of the form "[0-9]*[a-z]" are recognized.
237 If it is a '%s' format, the argument is a string; otherwise the
238 argument is assumed to be a long integer.
240 %% is also turned into a single %. */
243 monitor_vsprintf (char *sndbuf
, char *pattern
, va_list args
)
245 int addr_bit
= gdbarch_addr_bit (target_gdbarch ());
254 for (p
= pattern
; *p
; p
++)
258 /* Copy the format specifier to a separate buffer. */
260 for (i
= 1; *p
>= '0' && *p
<= '9' && i
< (int) sizeof (format
) - 2;
263 format
[i
] = fmt
= *p
;
264 format
[i
+ 1] = '\0';
266 /* Fetch the next argument and print it. */
270 strcpy (sndbuf
, "%");
273 arg_addr
= va_arg (args
, CORE_ADDR
);
274 strcpy (sndbuf
, phex_nz (arg_addr
, addr_bit
/ 8));
277 arg_string
= va_arg (args
, char *);
278 sprintf (sndbuf
, format
, arg_string
);
281 arg_int
= va_arg (args
, long);
282 sprintf (sndbuf
, format
, arg_int
);
285 sndbuf
+= strlen (sndbuf
);
294 /* monitor_printf_noecho -- Send data to monitor, but don't expect an echo.
295 Works just like printf. */
298 monitor_printf_noecho (char *pattern
,...)
304 va_start (args
, pattern
);
306 monitor_vsprintf (sndbuf
, pattern
, args
);
308 len
= strlen (sndbuf
);
309 if (len
+ 1 > sizeof sndbuf
)
310 internal_error (__FILE__
, __LINE__
,
311 _("failed internal consistency check"));
315 char *safe_string
= (char *) alloca ((strlen (sndbuf
) * 4) + 1);
317 monitor_printable_string (safe_string
, sndbuf
, 0);
318 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
321 monitor_write (sndbuf
, len
);
324 /* monitor_printf -- Send data to monitor and check the echo. Works just like
328 monitor_printf (char *pattern
,...)
334 va_start (args
, pattern
);
336 monitor_vsprintf (sndbuf
, pattern
, args
);
338 len
= strlen (sndbuf
);
339 if (len
+ 1 > sizeof sndbuf
)
340 internal_error (__FILE__
, __LINE__
,
341 _("failed internal consistency check"));
345 char *safe_string
= (char *) alloca ((len
* 4) + 1);
347 monitor_printable_string (safe_string
, sndbuf
, 0);
348 fprintf_unfiltered (gdb_stdlog
, "sent[%s]\n", safe_string
);
351 monitor_write (sndbuf
, len
);
353 /* We used to expect that the next immediate output was the
354 characters we just output, but sometimes some extra junk appeared
355 before the characters we expected, like an extra prompt, or a
356 portmaster sending telnet negotiations. So, just start searching
357 for what we sent, and skip anything unknown. */
358 monitor_debug ("ExpectEcho\n");
359 monitor_expect (sndbuf
, (char *) 0, 0);
363 /* Write characters to the remote system. */
366 monitor_write (char *buf
, int buflen
)
368 if (serial_write (monitor_desc
, buf
, buflen
))
369 fprintf_unfiltered (gdb_stderr
, "serial_write failed: %s\n",
370 safe_strerror (errno
));
374 /* Read a binary character from the remote system, doing all the fancy
375 timeout stuff, but without interpreting the character in any way,
376 and without printing remote debug information. */
379 monitor_readchar (void)
387 c
= serial_readchar (monitor_desc
, timeout
);
390 c
&= 0xff; /* don't lose bit 7 */
397 if (c
== SERIAL_TIMEOUT
)
398 error (_("Timeout reading from remote system."));
400 perror_with_name (_("remote-monitor"));
404 /* Read a character from the remote system, doing all the fancy
408 readchar (int timeout
)
413 last_random
, last_nl
, last_cr
, last_crnl
421 c
= serial_readchar (monitor_desc
, timeout
);
426 /* This seems to interfere with proper function of the
428 if (monitor_debug_p
|| remote_debug
)
434 puts_debug ("read -->", buf
, "<--");
439 /* Canonicialize \n\r combinations into one \r. */
440 if ((current_monitor
->flags
& MO_HANDLE_NL
) != 0)
442 if ((c
== '\r' && state
== last_nl
)
443 || (c
== '\n' && state
== last_cr
))
464 if (c
== SERIAL_TIMEOUT
)
466 /* I fail to see how detaching here can be useful. */
467 if (in_monitor_wait
) /* Watchdog went off. */
469 target_mourn_inferior ();
470 error (_("GDB serial timeout has expired. Target detached."));
474 error (_("Timeout reading from remote system."));
476 perror_with_name (_("remote-monitor"));
479 /* Scan input from the remote system, until STRING is found. If BUF is non-
480 zero, then collect input until we have collected either STRING or BUFLEN-1
481 chars. In either case we terminate BUF with a 0. If input overflows BUF
482 because STRING can't be found, return -1, else return number of chars in BUF
483 (minus the terminating NUL). Note that in the non-overflow case, STRING
484 will be at the end of BUF. */
487 monitor_expect (char *string
, char *buf
, int buflen
)
490 int obuflen
= buflen
;
495 char *safe_string
= (char *) alloca ((strlen (string
) * 4) + 1);
496 monitor_printable_string (safe_string
, string
, 0);
497 fprintf_unfiltered (gdb_stdlog
, "MON Expecting '%s'\n", safe_string
);
513 c
= readchar (timeout
);
520 c
= readchar (timeout
);
522 /* Don't expect any ^C sent to be echoed. */
524 if (*p
== '\003' || c
== *p
)
534 return obuflen
- buflen
;
542 /* We got a character that doesn't match the string. We need to
543 back up p, but how far? If we're looking for "..howdy" and the
544 monitor sends "...howdy"? There's certainly a match in there,
545 but when we receive the third ".", we won't find it if we just
546 restart the matching at the beginning of the string.
548 This is a Boyer-Moore kind of situation. We want to reset P to
549 the end of the longest prefix of STRING that is a suffix of
550 what we've read so far. In the example above, that would be
551 ".." --- the longest prefix of "..howdy" that is a suffix of
552 "...". This longest prefix could be the empty string, if C
553 is nowhere to be found in STRING.
555 If this longest prefix is not the empty string, it must contain
556 C, so let's search from the end of STRING for instances of C,
557 and see if the portion of STRING before that is a suffix of
558 what we read before C. Actually, we can search backwards from
559 p, since we know no prefix can be longer than that.
561 Note that we can use STRING itself, along with C, as a record
562 of what we've received so far. :) */
565 for (i
= (p
- string
) - 1; i
>= 0; i
--)
568 /* Is this prefix a suffix of what we've read so far?
570 string[0 .. i-1] == string[p - i, p - 1]? */
571 if (! memcmp (string
, p
- i
, i
))
583 /* Search for a regexp. */
586 monitor_expect_regexp (struct re_pattern_buffer
*pat
, char *buf
, int buflen
)
591 monitor_debug ("MON Expecting regexp\n");
596 mybuf
= alloca (TARGET_BUF_SIZE
);
597 buflen
= TARGET_BUF_SIZE
;
605 if (p
- mybuf
>= buflen
)
606 { /* Buffer about to overflow. */
608 /* On overflow, we copy the upper half of the buffer to the lower half. Not
609 great, but it usually works... */
611 memcpy (mybuf
, mybuf
+ buflen
/ 2, buflen
/ 2);
612 p
= mybuf
+ buflen
/ 2;
615 *p
++ = readchar (timeout
);
617 retval
= re_search (pat
, mybuf
, p
- mybuf
, 0, p
- mybuf
, NULL
);
623 /* Keep discarding input until we see the MONITOR prompt.
625 The convention for dealing with the prompt is that you
627 o *then* wait for the prompt.
629 Thus the last thing that a procedure does with the serial line will
630 be an monitor_expect_prompt(). Exception: monitor_resume does not
631 wait for the prompt, because the terminal is being handed over to
632 the inferior. However, the next thing which happens after that is
633 a monitor_wait which does wait for the prompt. Note that this
634 includes abnormal exit, e.g. error(). This is necessary to prevent
635 getting into states from which we can't recover. */
638 monitor_expect_prompt (char *buf
, int buflen
)
640 monitor_debug ("MON Expecting prompt\n");
641 return monitor_expect (current_monitor
->prompt
, buf
, buflen
);
644 /* Get N 32-bit words from remote, each preceded by a space, and put
645 them in registers starting at REGNO. */
656 ch
= readchar (timeout
);
657 while (isspace (ch
));
661 for (i
= 7; i
>= 1; i
--)
663 ch
= readchar (timeout
);
666 val
= (val
<< 4) | from_hex (ch
);
674 compile_pattern (char *pattern
, struct re_pattern_buffer
*compiled_pattern
,
680 compiled_pattern
->fastmap
= fastmap
;
682 tmp
= re_set_syntax (RE_SYNTAX_EMACS
);
683 val
= re_compile_pattern (pattern
,
689 error (_("compile_pattern: Can't compile pattern string `%s': %s!"),
693 re_compile_fastmap (compiled_pattern
);
696 /* Open a connection to a remote debugger. NAME is the filename used
697 for communication. */
700 monitor_open (const char *args
, struct monitor_ops
*mon_ops
, int from_tty
)
704 struct inferior
*inf
;
706 if (mon_ops
->magic
!= MONITOR_OPS_MAGIC
)
707 error (_("Magic number of monitor_ops struct wrong."));
709 targ_ops
= mon_ops
->target
;
710 name
= targ_ops
->to_shortname
;
713 error (_("Use `target %s DEVICE-NAME' to use a serial port, or\n\
714 `target %s HOST-NAME:PORT-NUMBER' to use a network connection."), name
, name
);
716 target_preopen (from_tty
);
718 /* Setup pattern for register dump. */
720 if (mon_ops
->register_pattern
)
721 compile_pattern (mon_ops
->register_pattern
, ®ister_pattern
,
724 if (mon_ops
->getmem
.resp_delim
)
725 compile_pattern (mon_ops
->getmem
.resp_delim
, &getmem_resp_delim_pattern
,
726 getmem_resp_delim_fastmap
);
728 if (mon_ops
->setmem
.resp_delim
)
729 compile_pattern (mon_ops
->setmem
.resp_delim
, &setmem_resp_delim_pattern
,
730 setmem_resp_delim_fastmap
);
732 if (mon_ops
->setreg
.resp_delim
)
733 compile_pattern (mon_ops
->setreg
.resp_delim
, &setreg_resp_delim_pattern
,
734 setreg_resp_delim_fastmap
);
736 unpush_target (targ_ops
);
740 dev_name
= xstrdup (args
);
742 monitor_desc
= serial_open (dev_name
);
745 perror_with_name (dev_name
);
749 if (serial_setbaudrate (monitor_desc
, baud_rate
))
751 serial_close (monitor_desc
);
752 perror_with_name (dev_name
);
756 serial_setparity (monitor_desc
, serial_parity
);
757 serial_raw (monitor_desc
);
759 serial_flush_input (monitor_desc
);
761 /* some systems only work with 2 stop bits. */
763 serial_setstopbits (monitor_desc
, mon_ops
->stopbits
);
765 current_monitor
= mon_ops
;
767 /* See if we can wake up the monitor. First, try sending a stop sequence,
768 then send the init strings. Last, remove all breakpoints. */
770 if (current_monitor
->stop
)
772 monitor_stop (targ_ops
, inferior_ptid
);
773 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
775 monitor_debug ("EXP Open echo\n");
776 monitor_expect_prompt (NULL
, 0);
780 /* wake up the monitor and see if it's alive. */
781 for (p
= mon_ops
->init
; *p
!= NULL
; p
++)
783 /* Some of the characters we send may not be echoed,
784 but we hope to get a prompt at the end of it all. */
786 if ((current_monitor
->flags
& MO_NO_ECHO_ON_OPEN
) == 0)
789 monitor_printf_noecho (*p
);
790 monitor_expect_prompt (NULL
, 0);
793 serial_flush_input (monitor_desc
);
795 /* Alloc breakpoints */
796 if (mon_ops
->set_break
!= NULL
)
798 if (mon_ops
->num_breakpoints
== 0)
799 mon_ops
->num_breakpoints
= 8;
801 breakaddr
= (CORE_ADDR
*)
802 xmalloc (mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
803 memset (breakaddr
, 0, mon_ops
->num_breakpoints
* sizeof (CORE_ADDR
));
806 /* Remove all breakpoints. */
808 if (mon_ops
->clr_all_break
)
810 monitor_printf (mon_ops
->clr_all_break
);
811 monitor_expect_prompt (NULL
, 0);
815 printf_unfiltered (_("Remote target %s connected to %s\n"),
818 push_target (targ_ops
);
823 /* Make run command think we are busy... */
824 inferior_ptid
= monitor_ptid
;
825 inf
= current_inferior ();
826 inferior_appeared (inf
, ptid_get_pid (inferior_ptid
));
827 add_thread_silent (inferior_ptid
);
829 /* Give monitor_wait something to read. */
831 monitor_printf (current_monitor
->line_term
);
833 init_wait_for_inferior ();
835 start_remote (from_tty
);
838 /* Close out all files and local state before this target loses
842 monitor_close (struct target_ops
*self
)
845 serial_close (monitor_desc
);
847 /* Free breakpoint memory. */
848 if (breakaddr
!= NULL
)
856 discard_all_inferiors ();
859 /* Terminate the open connection to the remote debugger. Use this
860 when you want to detach and do something else with your gdb. */
863 monitor_detach (struct target_ops
*ops
, const char *args
, int from_tty
)
865 unpush_target (ops
); /* calls monitor_close to do the real work. */
867 printf_unfiltered (_("Ending remote %s debugging\n"), target_shortname
);
870 /* Convert VALSTR into the target byte-ordered value of REGNO and store it. */
873 monitor_supply_register (struct regcache
*regcache
, int regno
, char *valstr
)
875 struct gdbarch
*gdbarch
= get_regcache_arch (regcache
);
876 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
878 unsigned char regbuf
[MAX_REGISTER_SIZE
];
883 while (p
&& *p
!= '\0')
885 if (*p
== '\r' || *p
== '\n')
896 if (!isxdigit (*p
) && *p
!= 'x')
902 val
+= fromhex (*p
++);
904 monitor_debug ("Supplying Register %d %s\n", regno
, valstr
);
906 if (val
== 0 && valstr
== p
)
907 error (_("monitor_supply_register (%d): bad value from monitor: %s."),
910 /* supply register stores in target byte order, so swap here. */
912 store_unsigned_integer (regbuf
, register_size (gdbarch
, regno
), byte_order
,
915 regcache_raw_supply (regcache
, regno
, regbuf
);
920 /* Tell the remote machine to resume. */
923 monitor_resume (struct target_ops
*ops
,
924 ptid_t ptid
, int step
, enum gdb_signal sig
)
926 /* Some monitors require a different command when starting a program. */
927 monitor_debug ("MON resume\n");
928 if (current_monitor
->flags
& MO_RUN_FIRST_TIME
&& first_time
== 1)
931 monitor_printf ("run\r");
932 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
937 monitor_printf (current_monitor
->step
);
940 if (current_monitor
->continue_hook
)
941 (*current_monitor
->continue_hook
) ();
943 monitor_printf (current_monitor
->cont
);
944 if (current_monitor
->flags
& MO_NEED_REGDUMP_AFTER_CONT
)
949 /* Parse the output of a register dump command. A monitor specific
950 regexp is used to extract individual register descriptions of the
951 form REG=VAL. Each description is split up into a name and a value
952 string which are passed down to monitor specific code. */
955 parse_register_dump (struct regcache
*regcache
, char *buf
, int len
)
957 monitor_debug ("MON Parsing register dump\n");
960 int regnamelen
, vallen
;
963 /* Element 0 points to start of register name, and element 1
964 points to the start of the register value. */
965 struct re_registers register_strings
;
967 memset (®ister_strings
, 0, sizeof (struct re_registers
));
969 if (re_search (®ister_pattern
, buf
, len
, 0, len
,
970 ®ister_strings
) == -1)
973 regnamelen
= register_strings
.end
[1] - register_strings
.start
[1];
974 regname
= buf
+ register_strings
.start
[1];
975 vallen
= register_strings
.end
[2] - register_strings
.start
[2];
976 val
= buf
+ register_strings
.start
[2];
978 current_monitor
->supply_register (regcache
, regname
, regnamelen
,
981 buf
+= register_strings
.end
[0];
982 len
-= register_strings
.end
[0];
986 /* Send ^C to target to halt it. Target will respond, and send us a
990 monitor_interrupt (int signo
)
992 /* If this doesn't work, try more severe steps. */
993 signal (signo
, monitor_interrupt_twice
);
995 if (monitor_debug_p
|| remote_debug
)
996 fprintf_unfiltered (gdb_stdlog
, "monitor_interrupt called\n");
998 target_stop (inferior_ptid
);
1001 /* The user typed ^C twice. */
1004 monitor_interrupt_twice (int signo
)
1006 signal (signo
, ofunc
);
1008 monitor_interrupt_query ();
1010 signal (signo
, monitor_interrupt
);
1013 /* Ask the user what to do when an interrupt is received. */
1016 monitor_interrupt_query (void)
1018 target_terminal_ours ();
1020 if (query (_("Interrupted while waiting for the program.\n\
1021 Give up (and stop debugging it)? ")))
1023 target_mourn_inferior ();
1027 target_terminal_inferior ();
1031 monitor_wait_cleanup (void *old_timeout
)
1033 timeout
= *(int *) old_timeout
;
1034 signal (SIGINT
, ofunc
);
1035 in_monitor_wait
= 0;
1041 monitor_wait_filter (char *buf
,
1044 struct target_waitstatus
*status
)
1050 resp_len
= monitor_expect_prompt (buf
, bufmax
);
1051 *ext_resp_len
= resp_len
;
1054 fprintf_unfiltered (gdb_stderr
,
1055 "monitor_wait: excessive "
1056 "response from monitor: %s.", buf
);
1058 while (resp_len
< 0);
1060 /* Print any output characters that were preceded by ^O. */
1061 /* FIXME - This would be great as a user settabgle flag. */
1062 if (monitor_debug_p
|| remote_debug
1063 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1067 for (i
= 0; i
< resp_len
- 1; i
++)
1069 putchar_unfiltered (buf
[++i
]);
1075 /* Wait until the remote machine stops, then return, storing status in
1076 status just as `wait' would. */
1079 monitor_wait (struct target_ops
*ops
,
1080 ptid_t ptid
, struct target_waitstatus
*status
, int options
)
1082 int old_timeout
= timeout
;
1083 char buf
[TARGET_BUF_SIZE
];
1085 struct cleanup
*old_chain
;
1087 status
->kind
= TARGET_WAITKIND_EXITED
;
1088 status
->value
.integer
= 0;
1090 old_chain
= make_cleanup (monitor_wait_cleanup
, &old_timeout
);
1091 monitor_debug ("MON wait\n");
1094 /* This is somthing other than a maintenance command. */
1095 in_monitor_wait
= 1;
1096 timeout
= watchdog
> 0 ? watchdog
: -1;
1098 timeout
= -1; /* Don't time out -- user program is running. */
1101 ofunc
= (void (*)()) signal (SIGINT
, monitor_interrupt
);
1103 if (current_monitor
->wait_filter
)
1104 (*current_monitor
->wait_filter
) (buf
, sizeof (buf
), &resp_len
, status
);
1106 monitor_wait_filter (buf
, sizeof (buf
), &resp_len
, status
);
1108 #if 0 /* Transferred to monitor wait filter. */
1111 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1114 fprintf_unfiltered (gdb_stderr
,
1115 "monitor_wait: excessive "
1116 "response from monitor: %s.", buf
);
1118 while (resp_len
< 0);
1120 /* Print any output characters that were preceded by ^O. */
1121 /* FIXME - This would be great as a user settabgle flag. */
1122 if (monitor_debug_p
|| remote_debug
1123 || current_monitor
->flags
& MO_PRINT_PROGRAM_OUTPUT
)
1127 for (i
= 0; i
< resp_len
- 1; i
++)
1129 putchar_unfiltered (buf
[++i
]);
1133 signal (SIGINT
, ofunc
);
1135 timeout
= old_timeout
;
1137 if (dump_reg_flag
&& current_monitor
->dump_registers
)
1140 monitor_printf (current_monitor
->dump_registers
);
1141 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1144 if (current_monitor
->register_pattern
)
1145 parse_register_dump (get_current_regcache (), buf
, resp_len
);
1147 monitor_debug ("Wait fetching registers after stop\n");
1148 monitor_dump_regs (get_current_regcache ());
1151 status
->kind
= TARGET_WAITKIND_STOPPED
;
1152 status
->value
.sig
= GDB_SIGNAL_TRAP
;
1154 discard_cleanups (old_chain
);
1156 in_monitor_wait
= 0;
1158 return inferior_ptid
;
1161 /* Fetch register REGNO, or all registers if REGNO is -1. Returns
1165 monitor_fetch_register (struct regcache
*regcache
, int regno
)
1172 regbuf
= alloca (MAX_REGISTER_SIZE
* 2 + 1);
1173 zerobuf
= alloca (MAX_REGISTER_SIZE
);
1174 memset (zerobuf
, 0, MAX_REGISTER_SIZE
);
1176 if (current_monitor
->regname
!= NULL
)
1177 name
= current_monitor
->regname (regno
);
1179 name
= current_monitor
->regnames
[regno
];
1180 monitor_debug ("MON fetchreg %d '%s'\n", regno
, name
? name
: "(null name)");
1182 if (!name
|| (*name
== '\0'))
1184 monitor_debug ("No register known for %d\n", regno
);
1185 regcache_raw_supply (regcache
, regno
, zerobuf
);
1189 /* Send the register examine command. */
1191 monitor_printf (current_monitor
->getreg
.cmd
, name
);
1193 /* If RESP_DELIM is specified, we search for that as a leading
1194 delimiter for the register value. Otherwise, we just start
1195 searching from the start of the buf. */
1197 if (current_monitor
->getreg
.resp_delim
)
1199 monitor_debug ("EXP getreg.resp_delim\n");
1200 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1201 /* Handle case of first 32 registers listed in pairs. */
1202 if (current_monitor
->flags
& MO_32_REGS_PAIRED
1203 && (regno
& 1) != 0 && regno
< 32)
1205 monitor_debug ("EXP getreg.resp_delim\n");
1206 monitor_expect (current_monitor
->getreg
.resp_delim
, NULL
, 0);
1210 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1211 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1215 c
= readchar (timeout
);
1217 c
= readchar (timeout
);
1218 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1221 error (_("Bad value returned from monitor "
1222 "while fetching register %x."),
1226 /* Read upto the maximum number of hex digits for this register, skipping
1227 spaces, but stop reading if something else is seen. Some monitors
1228 like to drop leading zeros. */
1230 for (i
= 0; i
< register_size (get_regcache_arch (regcache
), regno
) * 2; i
++)
1234 c
= readchar (timeout
);
1236 c
= readchar (timeout
);
1244 regbuf
[i
] = '\000'; /* Terminate the number. */
1245 monitor_debug ("REGVAL '%s'\n", regbuf
);
1247 /* If TERM is present, we wait for that to show up. Also, (if TERM
1248 is present), we will send TERM_CMD if that is present. In any
1249 case, we collect all of the output into buf, and then wait for
1250 the normal prompt. */
1252 if (current_monitor
->getreg
.term
)
1254 monitor_debug ("EXP getreg.term\n");
1255 monitor_expect (current_monitor
->getreg
.term
, NULL
, 0); /* Get
1259 if (current_monitor
->getreg
.term_cmd
)
1261 monitor_debug ("EMIT getreg.term.cmd\n");
1262 monitor_printf (current_monitor
->getreg
.term_cmd
);
1264 if (!current_monitor
->getreg
.term
|| /* Already expected or */
1265 current_monitor
->getreg
.term_cmd
) /* ack expected. */
1266 monitor_expect_prompt (NULL
, 0); /* Get response. */
1268 monitor_supply_register (regcache
, regno
, regbuf
);
1271 /* Sometimes, it takes several commands to dump the registers. */
1272 /* This is a primitive for use by variations of monitor interfaces in
1273 case they need to compose the operation. */
1276 monitor_dump_reg_block (struct regcache
*regcache
, char *block_cmd
)
1278 char buf
[TARGET_BUF_SIZE
];
1281 monitor_printf (block_cmd
);
1282 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1283 parse_register_dump (regcache
, buf
, resp_len
);
1288 /* Read the remote registers into the block regs. */
1289 /* Call the specific function if it has been provided. */
1292 monitor_dump_regs (struct regcache
*regcache
)
1294 char buf
[TARGET_BUF_SIZE
];
1297 if (current_monitor
->dumpregs
)
1298 (*(current_monitor
->dumpregs
)) (regcache
); /* Call supplied function. */
1299 else if (current_monitor
->dump_registers
) /* Default version. */
1301 monitor_printf (current_monitor
->dump_registers
);
1302 resp_len
= monitor_expect_prompt (buf
, sizeof (buf
));
1303 parse_register_dump (regcache
, buf
, resp_len
);
1306 /* Need some way to read registers. */
1307 internal_error (__FILE__
, __LINE__
,
1308 _("failed internal consistency check"));
1312 monitor_fetch_registers (struct target_ops
*ops
,
1313 struct regcache
*regcache
, int regno
)
1315 monitor_debug ("MON fetchregs\n");
1316 if (current_monitor
->getreg
.cmd
)
1320 monitor_fetch_register (regcache
, regno
);
1324 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1326 monitor_fetch_register (regcache
, regno
);
1330 monitor_dump_regs (regcache
);
1334 /* Store register REGNO, or all if REGNO == 0. Return errno value. */
1337 monitor_store_register (struct regcache
*regcache
, int regno
)
1339 int reg_size
= register_size (get_regcache_arch (regcache
), regno
);
1343 if (current_monitor
->regname
!= NULL
)
1344 name
= current_monitor
->regname (regno
);
1346 name
= current_monitor
->regnames
[regno
];
1348 if (!name
|| (*name
== '\0'))
1350 monitor_debug ("MON Cannot store unknown register\n");
1354 regcache_cooked_read_unsigned (regcache
, regno
, &val
);
1355 monitor_debug ("MON storeg %d %s\n", regno
, phex (val
, reg_size
));
1357 /* Send the register deposit command. */
1359 if (current_monitor
->flags
& MO_REGISTER_VALUE_FIRST
)
1360 monitor_printf (current_monitor
->setreg
.cmd
, val
, name
);
1361 else if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1362 monitor_printf (current_monitor
->setreg
.cmd
, name
);
1364 monitor_printf (current_monitor
->setreg
.cmd
, name
, val
);
1366 if (current_monitor
->setreg
.resp_delim
)
1368 monitor_debug ("EXP setreg.resp_delim\n");
1369 monitor_expect_regexp (&setreg_resp_delim_pattern
, NULL
, 0);
1370 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1371 monitor_printf ("%s\r", phex_nz (val
, reg_size
));
1373 if (current_monitor
->setreg
.term
)
1375 monitor_debug ("EXP setreg.term\n");
1376 monitor_expect (current_monitor
->setreg
.term
, NULL
, 0);
1377 if (current_monitor
->flags
& MO_SETREG_INTERACTIVE
)
1378 monitor_printf ("%s\r", phex_nz (val
, reg_size
));
1379 monitor_expect_prompt (NULL
, 0);
1382 monitor_expect_prompt (NULL
, 0);
1383 if (current_monitor
->setreg
.term_cmd
) /* Mode exit required. */
1385 monitor_debug ("EXP setreg_termcmd\n");
1386 monitor_printf ("%s", current_monitor
->setreg
.term_cmd
);
1387 monitor_expect_prompt (NULL
, 0);
1389 } /* monitor_store_register */
1391 /* Store the remote registers. */
1394 monitor_store_registers (struct target_ops
*ops
,
1395 struct regcache
*regcache
, int regno
)
1399 monitor_store_register (regcache
, regno
);
1403 for (regno
= 0; regno
< gdbarch_num_regs (get_regcache_arch (regcache
));
1405 monitor_store_register (regcache
, regno
);
1408 /* Get ready to modify the registers array. On machines which store
1409 individual registers, this doesn't need to do anything. On machines
1410 which store all the registers in one fell swoop, this makes sure
1411 that registers contains all the registers from the program being
1415 monitor_prepare_to_store (struct target_ops
*self
, struct regcache
*regcache
)
1417 /* Do nothing, since we can store individual regs. */
1421 monitor_files_info (struct target_ops
*ops
)
1423 printf_unfiltered (_("\tAttached to %s at %d baud.\n"), dev_name
, baud_rate
);
1427 monitor_write_memory (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1429 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
1430 unsigned int val
, hostval
;
1434 monitor_debug ("MON write %d %s\n", len
, paddress (target_gdbarch (), memaddr
));
1436 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1437 memaddr
= gdbarch_addr_bits_remove (target_gdbarch (), memaddr
);
1439 /* Use memory fill command for leading 0 bytes. */
1441 if (current_monitor
->fill
)
1443 for (i
= 0; i
< len
; i
++)
1447 if (i
> 4) /* More than 4 zeros is worth doing. */
1449 monitor_debug ("MON FILL %d\n", i
);
1450 if (current_monitor
->flags
& MO_FILL_USES_ADDR
)
1451 monitor_printf (current_monitor
->fill
, memaddr
,
1452 (memaddr
+ i
) - 1, 0);
1454 monitor_printf (current_monitor
->fill
, memaddr
, i
, 0);
1456 monitor_expect_prompt (NULL
, 0);
1463 /* Can't actually use long longs if VAL is an int (nice idea, though). */
1464 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->setmem
.cmdll
)
1467 cmd
= current_monitor
->setmem
.cmdll
;
1471 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->setmem
.cmdl
)
1474 cmd
= current_monitor
->setmem
.cmdl
;
1476 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->setmem
.cmdw
)
1479 cmd
= current_monitor
->setmem
.cmdw
;
1484 cmd
= current_monitor
->setmem
.cmdb
;
1487 val
= extract_unsigned_integer (myaddr
, len
, byte_order
);
1491 hostval
= *(unsigned int *) myaddr
;
1492 monitor_debug ("Hostval(%08x) val(%08x)\n", hostval
, val
);
1496 if (current_monitor
->flags
& MO_NO_ECHO_ON_SETMEM
)
1497 monitor_printf_noecho (cmd
, memaddr
, val
);
1498 else if (current_monitor
->flags
& MO_SETMEM_INTERACTIVE
)
1500 monitor_printf_noecho (cmd
, memaddr
);
1502 if (current_monitor
->setmem
.resp_delim
)
1504 monitor_debug ("EXP setmem.resp_delim");
1505 monitor_expect_regexp (&setmem_resp_delim_pattern
, NULL
, 0);
1506 monitor_printf ("%x\r", val
);
1508 if (current_monitor
->setmem
.term
)
1510 monitor_debug ("EXP setmem.term");
1511 monitor_expect (current_monitor
->setmem
.term
, NULL
, 0);
1512 monitor_printf ("%x\r", val
);
1514 if (current_monitor
->setmem
.term_cmd
)
1515 { /* Emit this to get out of the memory editing state. */
1516 monitor_printf ("%s", current_monitor
->setmem
.term_cmd
);
1517 /* Drop through to expecting a prompt. */
1521 monitor_printf (cmd
, memaddr
, val
);
1523 monitor_expect_prompt (NULL
, 0);
1530 monitor_write_memory_bytes (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1537 /* Enter the sub mode. */
1538 monitor_printf (current_monitor
->setmem
.cmdb
, memaddr
);
1539 monitor_expect_prompt (NULL
, 0);
1543 monitor_printf ("%x\r", val
);
1547 /* If we wanted to, here we could validate the address. */
1548 monitor_expect_prompt (NULL
, 0);
1551 /* Now exit the sub mode. */
1552 monitor_printf (current_monitor
->getreg
.term_cmd
);
1553 monitor_expect_prompt (NULL
, 0);
1559 longlongendswap (unsigned char *a
)
1569 *(a
+ i
) = *(a
+ j
);
1574 /* Format 32 chars of long long value, advance the pointer. */
1575 static char *hexlate
= "0123456789abcdef";
1577 longlong_hexchars (unsigned long long value
,
1587 static unsigned char disbuf
[8]; /* disassembly buffer */
1588 unsigned char *scan
, *limit
; /* loop controls */
1589 unsigned char c
, nib
;
1595 unsigned long long *dp
;
1597 dp
= (unsigned long long *) scan
;
1600 longlongendswap (disbuf
); /* FIXME: ONly on big endian hosts. */
1601 while (scan
< limit
)
1603 c
= *scan
++; /* A byte of our long long value. */
1609 leadzero
= 0; /* Henceforth we print even zeroes. */
1611 nib
= c
>> 4; /* high nibble bits */
1612 *outbuff
++ = hexlate
[nib
];
1613 nib
= c
& 0x0f; /* low nibble bits */
1614 *outbuff
++ = hexlate
[nib
];
1618 } /* longlong_hexchars */
1622 /* I am only going to call this when writing virtual byte streams.
1623 Which possably entails endian conversions. */
1626 monitor_write_memory_longlongs (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1628 static char hexstage
[20]; /* At least 16 digits required, plus null. */
1634 llptr
= (long long *) myaddr
;
1637 monitor_printf (current_monitor
->setmem
.cmdll
, memaddr
);
1638 monitor_expect_prompt (NULL
, 0);
1642 endstring
= longlong_hexchars (*llptr
, hexstage
);
1643 *endstring
= '\0'; /* NUll terminate for printf. */
1644 monitor_printf ("%s\r", hexstage
);
1648 /* If we wanted to, here we could validate the address. */
1649 monitor_expect_prompt (NULL
, 0);
1652 /* Now exit the sub mode. */
1653 monitor_printf (current_monitor
->getreg
.term_cmd
);
1654 monitor_expect_prompt (NULL
, 0);
1660 /* ----- MONITOR_WRITE_MEMORY_BLOCK ---------------------------- */
1661 /* This is for the large blocks of memory which may occur in downloading.
1662 And for monitors which use interactive entry,
1663 And for monitors which do not have other downloading methods.
1664 Without this, we will end up calling monitor_write_memory many times
1665 and do the entry and exit of the sub mode many times
1666 This currently assumes...
1667 MO_SETMEM_INTERACTIVE
1668 ! MO_NO_ECHO_ON_SETMEM
1669 To use this, the you have to patch the monitor_cmds block with
1670 this function. Otherwise, its not tuned up for use by all
1671 monitor variations. */
1674 monitor_write_memory_block (CORE_ADDR memaddr
, const gdb_byte
*myaddr
, int len
)
1679 /* FIXME: This would be a good place to put the zero test. */
1681 if ((len
> 8) && (((len
& 0x07)) == 0) && current_monitor
->setmem
.cmdll
)
1683 return monitor_write_memory_longlongs (memaddr
, myaddr
, len
);
1686 written
= monitor_write_memory_bytes (memaddr
, myaddr
, len
);
1690 /* This is an alternate form of monitor_read_memory which is used for monitors
1691 which can only read a single byte/word/etc. at a time. */
1694 monitor_read_memory_single (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1696 enum bfd_endian byte_order
= gdbarch_byte_order (target_gdbarch ());
1698 char membuf
[sizeof (int) * 2 + 1];
1702 monitor_debug ("MON read single\n");
1704 /* Can't actually use long longs (nice idea, though). In fact, the
1705 call to strtoul below will fail if it tries to convert a value
1706 that's too big to fit in a long. */
1707 if ((memaddr
& 0x7) == 0 && len
>= 8 && current_monitor
->getmem
.cmdll
)
1710 cmd
= current_monitor
->getmem
.cmdll
;
1714 if ((memaddr
& 0x3) == 0 && len
>= 4 && current_monitor
->getmem
.cmdl
)
1717 cmd
= current_monitor
->getmem
.cmdl
;
1719 else if ((memaddr
& 0x1) == 0 && len
>= 2 && current_monitor
->getmem
.cmdw
)
1722 cmd
= current_monitor
->getmem
.cmdw
;
1727 cmd
= current_monitor
->getmem
.cmdb
;
1730 /* Send the examine command. */
1732 monitor_printf (cmd
, memaddr
);
1734 /* If RESP_DELIM is specified, we search for that as a leading
1735 delimiter for the memory value. Otherwise, we just start
1736 searching from the start of the buf. */
1738 if (current_monitor
->getmem
.resp_delim
)
1740 monitor_debug ("EXP getmem.resp_delim\n");
1741 monitor_expect_regexp (&getmem_resp_delim_pattern
, NULL
, 0);
1744 /* Now, read the appropriate number of hex digits for this loc,
1747 /* Skip leading spaces and "0x" if MO_HEX_PREFIX flag is set. */
1748 if (current_monitor
->flags
& MO_HEX_PREFIX
)
1752 c
= readchar (timeout
);
1754 c
= readchar (timeout
);
1755 if ((c
== '0') && ((c
= readchar (timeout
)) == 'x'))
1758 monitor_error ("monitor_read_memory_single",
1759 "bad response from monitor",
1760 memaddr
, 0, NULL
, 0);
1766 for (i
= 0; i
< len
* 2; i
++)
1772 c
= readchar (timeout
);
1778 monitor_error ("monitor_read_memory_single",
1779 "bad response from monitor",
1780 memaddr
, i
, membuf
, 0);
1784 membuf
[i
] = '\000'; /* Terminate the number. */
1787 /* If TERM is present, we wait for that to show up. Also, (if TERM is
1788 present), we will send TERM_CMD if that is present. In any case, we collect
1789 all of the output into buf, and then wait for the normal prompt. */
1791 if (current_monitor
->getmem
.term
)
1793 monitor_expect (current_monitor
->getmem
.term
, NULL
, 0); /* Get
1796 if (current_monitor
->getmem
.term_cmd
)
1798 monitor_printf (current_monitor
->getmem
.term_cmd
);
1799 monitor_expect_prompt (NULL
, 0);
1803 monitor_expect_prompt (NULL
, 0); /* Get response. */
1806 val
= strtoul (membuf
, &p
, 16);
1808 if (val
== 0 && membuf
== p
)
1809 monitor_error ("monitor_read_memory_single",
1810 "bad value from monitor",
1811 memaddr
, 0, membuf
, 0);
1813 /* supply register stores in target byte order, so swap here. */
1815 store_unsigned_integer (myaddr
, len
, byte_order
, val
);
1820 /* Copy LEN bytes of data from debugger memory at MYADDR to inferior's
1821 memory at MEMADDR. Returns length moved. Currently, we do no more
1822 than 16 bytes at a time. */
1825 monitor_read_memory (CORE_ADDR memaddr
, gdb_byte
*myaddr
, int len
)
1836 monitor_debug ("Zero length call to monitor_read_memory\n");
1840 monitor_debug ("MON read block ta(%s) ha(%s) %d\n",
1841 paddress (target_gdbarch (), memaddr
),
1842 host_address_to_string (myaddr
), len
);
1844 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
1845 memaddr
= gdbarch_addr_bits_remove (target_gdbarch (), memaddr
);
1847 if (current_monitor
->flags
& MO_GETMEM_READ_SINGLE
)
1848 return monitor_read_memory_single (memaddr
, myaddr
, len
);
1850 len
= min (len
, 16);
1852 /* Some dumpers align the first data with the preceding 16
1853 byte boundary. Some print blanks and start at the
1854 requested boundary. EXACT_DUMPADDR */
1856 dumpaddr
= (current_monitor
->flags
& MO_EXACT_DUMPADDR
)
1857 ? memaddr
: memaddr
& ~0x0f;
1859 /* See if xfer would cross a 16 byte boundary. If so, clip it. */
1860 if (((memaddr
^ (memaddr
+ len
- 1)) & ~0xf) != 0)
1861 len
= ((memaddr
+ len
) & ~0xf) - memaddr
;
1863 /* Send the memory examine command. */
1865 if (current_monitor
->flags
& MO_GETMEM_NEEDS_RANGE
)
1866 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, memaddr
+ len
);
1867 else if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1868 monitor_printf (current_monitor
->getmem
.cmdb
, dumpaddr
);
1870 monitor_printf (current_monitor
->getmem
.cmdb
, memaddr
, len
);
1872 /* If TERM is present, we wait for that to show up. Also, (if TERM
1873 is present), we will send TERM_CMD if that is present. In any
1874 case, we collect all of the output into buf, and then wait for
1875 the normal prompt. */
1877 if (current_monitor
->getmem
.term
)
1879 resp_len
= monitor_expect (current_monitor
->getmem
.term
,
1880 buf
, sizeof buf
); /* Get response. */
1883 monitor_error ("monitor_read_memory",
1884 "excessive response from monitor",
1885 memaddr
, resp_len
, buf
, 0);
1887 if (current_monitor
->getmem
.term_cmd
)
1889 serial_write (monitor_desc
, current_monitor
->getmem
.term_cmd
,
1890 strlen (current_monitor
->getmem
.term_cmd
));
1891 monitor_expect_prompt (NULL
, 0);
1895 resp_len
= monitor_expect_prompt (buf
, sizeof buf
); /* Get response. */
1899 /* If RESP_DELIM is specified, we search for that as a leading
1900 delimiter for the values. Otherwise, we just start searching
1901 from the start of the buf. */
1903 if (current_monitor
->getmem
.resp_delim
)
1906 struct re_registers resp_strings
;
1908 monitor_debug ("MON getmem.resp_delim %s\n",
1909 current_monitor
->getmem
.resp_delim
);
1911 memset (&resp_strings
, 0, sizeof (struct re_registers
));
1913 retval
= re_search (&getmem_resp_delim_pattern
, p
, tmp
, 0, tmp
,
1917 monitor_error ("monitor_read_memory",
1918 "bad response from monitor",
1919 memaddr
, resp_len
, buf
, 0);
1921 p
+= resp_strings
.end
[0];
1923 p
= strstr (p
, current_monitor
->getmem
.resp_delim
);
1925 monitor_error ("monitor_read_memory",
1926 "bad response from monitor",
1927 memaddr
, resp_len
, buf
, 0);
1928 p
+= strlen (current_monitor
->getmem
.resp_delim
);
1931 monitor_debug ("MON scanning %d ,%s '%s'\n", len
,
1932 host_address_to_string (p
), p
);
1933 if (current_monitor
->flags
& MO_GETMEM_16_BOUNDARY
)
1941 while (!(c
== '\000' || c
== '\n' || c
== '\r') && i
> 0)
1945 if ((dumpaddr
>= memaddr
) && (i
> 0))
1947 val
= fromhex (c
) * 16 + fromhex (*(p
+ 1));
1949 if (monitor_debug_p
|| remote_debug
)
1950 fprintf_unfiltered (gdb_stdlog
, "[%02x]", val
);
1957 ++p
; /* Skip a blank or other non hex char. */
1961 error (_("Failed to read via monitor"));
1962 if (monitor_debug_p
|| remote_debug
)
1963 fprintf_unfiltered (gdb_stdlog
, "\n");
1964 return fetched
; /* Return the number of bytes actually
1967 monitor_debug ("MON scanning bytes\n");
1969 for (i
= len
; i
> 0; i
--)
1971 /* Skip non-hex chars, but bomb on end of string and newlines. */
1978 if (*p
== '\000' || *p
== '\n' || *p
== '\r')
1979 monitor_error ("monitor_read_memory",
1980 "badly terminated response from monitor",
1981 memaddr
, resp_len
, buf
, 0);
1985 val
= strtoul (p
, &p1
, 16);
1987 if (val
== 0 && p
== p1
)
1988 monitor_error ("monitor_read_memory",
1989 "bad value from monitor",
1990 memaddr
, resp_len
, buf
, 0);
2003 /* Helper for monitor_xfer_partial that handles memory transfers.
2004 Arguments are like target_xfer_partial. */
2006 static enum target_xfer_status
2007 monitor_xfer_memory (gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
2008 ULONGEST memaddr
, ULONGEST len
, ULONGEST
*xfered_len
)
2012 if (writebuf
!= NULL
)
2014 if (current_monitor
->flags
& MO_HAS_BLOCKWRITES
)
2015 res
= monitor_write_memory_block (memaddr
, writebuf
, len
);
2017 res
= monitor_write_memory (memaddr
, writebuf
, len
);
2021 res
= monitor_read_memory (memaddr
, readbuf
, len
);
2025 return TARGET_XFER_E_IO
;
2028 *xfered_len
= (ULONGEST
) res
;
2029 return TARGET_XFER_OK
;
2033 /* Target to_xfer_partial implementation. */
2035 static enum target_xfer_status
2036 monitor_xfer_partial (struct target_ops
*ops
, enum target_object object
,
2037 const char *annex
, gdb_byte
*readbuf
,
2038 const gdb_byte
*writebuf
, ULONGEST offset
, ULONGEST len
,
2039 ULONGEST
*xfered_len
)
2043 case TARGET_OBJECT_MEMORY
:
2044 return monitor_xfer_memory (readbuf
, writebuf
, offset
, len
, xfered_len
);
2047 return TARGET_XFER_E_IO
;
2052 monitor_kill (struct target_ops
*ops
)
2054 return; /* Ignore attempts to kill target system. */
2057 /* All we actually do is set the PC to the start address of exec_bfd. */
2060 monitor_create_inferior (struct target_ops
*ops
, char *exec_file
,
2061 char *args
, char **env
, int from_tty
)
2063 if (args
&& (*args
!= '\000'))
2064 error (_("Args are not supported by the monitor."));
2067 clear_proceed_status (0);
2068 regcache_write_pc (get_current_regcache (),
2069 bfd_get_start_address (exec_bfd
));
2072 /* Clean up when a program exits.
2073 The program actually lives on in the remote processor's RAM, and may be
2074 run again without a download. Don't leave it full of breakpoint
2078 monitor_mourn_inferior (struct target_ops
*ops
)
2080 unpush_target (targ_ops
);
2081 generic_mourn_inferior (); /* Do all the proper things now. */
2082 delete_thread_silent (monitor_ptid
);
2085 /* Tell the monitor to add a breakpoint. */
2088 monitor_insert_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
2089 struct bp_target_info
*bp_tgt
)
2091 CORE_ADDR addr
= bp_tgt
->placed_address
= bp_tgt
->reqstd_address
;
2095 monitor_debug ("MON inst bkpt %s\n", paddress (gdbarch
, addr
));
2096 if (current_monitor
->set_break
== NULL
)
2097 error (_("No set_break defined for this monitor"));
2099 if (current_monitor
->flags
& MO_ADDR_BITS_REMOVE
)
2100 addr
= gdbarch_addr_bits_remove (gdbarch
, addr
);
2102 /* Determine appropriate breakpoint size for this address. */
2103 gdbarch_breakpoint_from_pc (gdbarch
, &addr
, &bplen
);
2104 bp_tgt
->placed_address
= addr
;
2105 bp_tgt
->placed_size
= bplen
;
2107 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2109 if (breakaddr
[i
] == 0)
2111 breakaddr
[i
] = addr
;
2112 monitor_printf (current_monitor
->set_break
, addr
);
2113 monitor_expect_prompt (NULL
, 0);
2118 error (_("Too many breakpoints (> %d) for monitor."),
2119 current_monitor
->num_breakpoints
);
2122 /* Tell the monitor to remove a breakpoint. */
2125 monitor_remove_breakpoint (struct target_ops
*ops
, struct gdbarch
*gdbarch
,
2126 struct bp_target_info
*bp_tgt
)
2128 CORE_ADDR addr
= bp_tgt
->placed_address
;
2131 monitor_debug ("MON rmbkpt %s\n", paddress (gdbarch
, addr
));
2132 if (current_monitor
->clr_break
== NULL
)
2133 error (_("No clr_break defined for this monitor"));
2135 for (i
= 0; i
< current_monitor
->num_breakpoints
; i
++)
2137 if (breakaddr
[i
] == addr
)
2140 /* Some monitors remove breakpoints based on the address. */
2141 if (current_monitor
->flags
& MO_CLR_BREAK_USES_ADDR
)
2142 monitor_printf (current_monitor
->clr_break
, addr
);
2143 else if (current_monitor
->flags
& MO_CLR_BREAK_1_BASED
)
2144 monitor_printf (current_monitor
->clr_break
, i
+ 1);
2146 monitor_printf (current_monitor
->clr_break
, i
);
2147 monitor_expect_prompt (NULL
, 0);
2151 fprintf_unfiltered (gdb_stderr
,
2152 "Can't find breakpoint associated with %s\n",
2153 paddress (gdbarch
, addr
));
2157 /* monitor_wait_srec_ack -- wait for the target to send an acknowledgement for
2158 an S-record. Return non-zero if the ACK is received properly. */
2161 monitor_wait_srec_ack (void)
2165 if (current_monitor
->flags
& MO_SREC_ACK_PLUS
)
2167 return (readchar (timeout
) == '+');
2169 else if (current_monitor
->flags
& MO_SREC_ACK_ROTATE
)
2171 /* Eat two backspaces, a "rotating" char (|/-\), and a space. */
2172 if ((ch
= readchar (1)) < 0)
2174 if ((ch
= readchar (1)) < 0)
2176 if ((ch
= readchar (1)) < 0)
2178 if ((ch
= readchar (1)) < 0)
2184 /* monitor_load -- download a file. */
2187 monitor_load (struct target_ops
*self
, const char *args
, int from_tty
)
2189 CORE_ADDR load_offset
= 0;
2191 struct cleanup
*old_cleanups
;
2194 monitor_debug ("MON load\n");
2197 error_no_arg (_("file to load"));
2199 argv
= gdb_buildargv (args
);
2200 old_cleanups
= make_cleanup_freeargv (argv
);
2202 filename
= tilde_expand (argv
[0]);
2203 make_cleanup (xfree
, filename
);
2205 /* Enable user to specify address for downloading as 2nd arg to load. */
2206 if (argv
[1] != NULL
)
2210 load_offset
= strtoulst (argv
[1], &endptr
, 0);
2212 /* If the last word was not a valid number then
2213 treat it as a file name with spaces in. */
2214 if (argv
[1] == endptr
)
2215 error (_("Invalid download offset:%s."), argv
[1]);
2217 if (argv
[2] != NULL
)
2218 error (_("Too many parameters."));
2221 monitor_printf (current_monitor
->load
);
2222 if (current_monitor
->loadresp
)
2223 monitor_expect (current_monitor
->loadresp
, NULL
, 0);
2225 load_srec (monitor_desc
, filename
, load_offset
,
2226 32, SREC_ALL
, hashmark
,
2227 current_monitor
->flags
& MO_SREC_ACK
?
2228 monitor_wait_srec_ack
: NULL
);
2230 monitor_expect_prompt (NULL
, 0);
2232 do_cleanups (old_cleanups
);
2234 /* Finally, make the PC point at the start address. */
2236 regcache_write_pc (get_current_regcache (),
2237 bfd_get_start_address (exec_bfd
));
2239 /* There used to be code here which would clear inferior_ptid and
2240 call clear_symtab_users. None of that should be necessary:
2241 monitor targets should behave like remote protocol targets, and
2242 since generic_load does none of those things, this function
2245 Furthermore, clearing inferior_ptid is *incorrect*. After doing
2246 a load, we still have a valid connection to the monitor, with a
2247 live processor state to fiddle with. The user can type
2248 `continue' or `jump *start' and make the program run. If they do
2249 these things, however, GDB will be talking to a running program
2250 while inferior_ptid is null_ptid; this makes things like
2251 reinit_frame_cache very confused. */
2255 monitor_stop (struct target_ops
*self
, ptid_t ptid
)
2257 monitor_debug ("MON stop\n");
2258 if ((current_monitor
->flags
& MO_SEND_BREAK_ON_STOP
) != 0)
2259 serial_send_break (monitor_desc
);
2260 if (current_monitor
->stop
)
2261 monitor_printf_noecho (current_monitor
->stop
);
2264 /* Put a COMMAND string out to MONITOR. Output from MONITOR is placed
2265 in OUTPUT until the prompt is seen. FIXME: We read the characters
2266 ourseleves here cause of a nasty echo. */
2269 monitor_rcmd (struct target_ops
*self
, const char *command
,
2270 struct ui_file
*outbuf
)
2276 if (monitor_desc
== NULL
)
2277 error (_("monitor target not open."));
2279 p
= current_monitor
->prompt
;
2281 /* Send the command. Note that if no args were supplied, then we're
2282 just sending the monitor a newline, which is sometimes useful. */
2284 monitor_printf ("%s\r", (command
? command
: ""));
2286 resp_len
= monitor_expect_prompt (buf
, sizeof buf
);
2288 fputs_unfiltered (buf
, outbuf
); /* Output the response. */
2291 /* Convert hex digit A to a number. */
2297 if (a
>= '0' && a
<= '9')
2299 if (a
>= 'a' && a
<= 'f')
2300 return a
- 'a' + 10;
2301 if (a
>= 'A' && a
<= 'F')
2302 return a
- 'A' + 10;
2304 error (_("Reply contains invalid hex digit 0x%x"), a
);
2309 monitor_get_dev_name (void)
2314 /* Check to see if a thread is still alive. */
2317 monitor_thread_alive (struct target_ops
*ops
, ptid_t ptid
)
2319 if (ptid_equal (ptid
, monitor_ptid
))
2320 /* The monitor's task is always alive. */
2326 /* Convert a thread ID to a string. Returns the string in a static
2330 monitor_pid_to_str (struct target_ops
*ops
, ptid_t ptid
)
2332 static char buf
[64];
2334 if (ptid_equal (monitor_ptid
, ptid
))
2336 xsnprintf (buf
, sizeof buf
, "Thread <main>");
2340 return normal_pid_to_str (ptid
);
2343 static struct target_ops monitor_ops
;
2346 init_base_monitor_ops (void)
2348 monitor_ops
.to_close
= monitor_close
;
2349 monitor_ops
.to_detach
= monitor_detach
;
2350 monitor_ops
.to_resume
= monitor_resume
;
2351 monitor_ops
.to_wait
= monitor_wait
;
2352 monitor_ops
.to_fetch_registers
= monitor_fetch_registers
;
2353 monitor_ops
.to_store_registers
= monitor_store_registers
;
2354 monitor_ops
.to_prepare_to_store
= monitor_prepare_to_store
;
2355 monitor_ops
.to_xfer_partial
= monitor_xfer_partial
;
2356 monitor_ops
.to_files_info
= monitor_files_info
;
2357 monitor_ops
.to_insert_breakpoint
= monitor_insert_breakpoint
;
2358 monitor_ops
.to_remove_breakpoint
= monitor_remove_breakpoint
;
2359 monitor_ops
.to_kill
= monitor_kill
;
2360 monitor_ops
.to_load
= monitor_load
;
2361 monitor_ops
.to_create_inferior
= monitor_create_inferior
;
2362 monitor_ops
.to_mourn_inferior
= monitor_mourn_inferior
;
2363 monitor_ops
.to_stop
= monitor_stop
;
2364 monitor_ops
.to_rcmd
= monitor_rcmd
;
2365 monitor_ops
.to_log_command
= serial_log_command
;
2366 monitor_ops
.to_thread_alive
= monitor_thread_alive
;
2367 monitor_ops
.to_pid_to_str
= monitor_pid_to_str
;
2368 monitor_ops
.to_stratum
= process_stratum
;
2369 monitor_ops
.to_has_all_memory
= default_child_has_all_memory
;
2370 monitor_ops
.to_has_memory
= default_child_has_memory
;
2371 monitor_ops
.to_has_stack
= default_child_has_stack
;
2372 monitor_ops
.to_has_registers
= default_child_has_registers
;
2373 monitor_ops
.to_has_execution
= default_child_has_execution
;
2374 monitor_ops
.to_magic
= OPS_MAGIC
;
2375 } /* init_base_monitor_ops */
2377 /* Init the target_ops structure pointed at by OPS. */
2380 init_monitor_ops (struct target_ops
*ops
)
2382 if (monitor_ops
.to_magic
!= OPS_MAGIC
)
2383 init_base_monitor_ops ();
2385 memcpy (ops
, &monitor_ops
, sizeof monitor_ops
);
2388 /* Define additional commands that are usually only used by monitors. */
2390 /* -Wmissing-prototypes */
2391 extern initialize_file_ftype _initialize_remote_monitors
;
2394 _initialize_remote_monitors (void)
2396 init_base_monitor_ops ();
2397 add_setshow_boolean_cmd ("hash", no_class
, &hashmark
, _("\
2398 Set display of activity while downloading a file."), _("\
2399 Show display of activity while downloading a file."), _("\
2400 When enabled, a hashmark \'#\' is displayed."),
2402 NULL
, /* FIXME: i18n: */
2403 &setlist
, &showlist
);
2405 add_setshow_zuinteger_cmd ("monitor", no_class
, &monitor_debug_p
, _("\
2406 Set debugging of remote monitor communication."), _("\
2407 Show debugging of remote monitor communication."), _("\
2408 When enabled, communication between GDB and the remote monitor\n\
2411 NULL
, /* FIXME: i18n: */
2412 &setdebuglist
, &showdebuglist
);
2414 /* Yes, 42000 is arbitrary. The only sense out of it, is that it
2416 monitor_ptid
= ptid_build (42000, 0, 42000);